>
h:= x -> x^2 +
3;

>
rightbox(h(x), x
= 0..4, 8, color
= blue, shading
= gray);
![[Maple Plot]](xxx.files/C1-25R29.gif)
>
rightsum(h(x), x
= 0..4,
8):%=evalf(%);

>
rightbox(h(x), x
= 0..4, 16,
color = blue,
shading = gray);
![[Maple Plot]](xxx.files/C1-25R31.gif)
>
rightsum(h(x), x
= 0..4,
16):%=evalf(%);

>
rightbox(h(x), x
= 0..4, 128,
color = blue,
shading = gray);
![[Maple Plot]](xxx.files/C1-25R33.gif)
>
rightsum(h(x), x
= 0..4,
128):%=evalf(%);

>
Int(h(x),x):%=value(%)+C;

>
Int(h(x), x =
0..4):%=evalf(%);
